I would never put ads on relays. That being said. I have to cover over 1/2 of the nostr:npub16fcy8ynknssdv7s487nh4p2h4vr3aun64lpfea45d7h4sts9jheqevshgh costs to keep it free. This month we got to the 1/2 since I became like PBS and NPR with #Adopt-A-Relay
Would rather keep moving toward Relays-As-A-Service with nostr:npub1rhaxmxxgs5jkw4zesrptnwd5nrknh5lkaxnlzzegz9vphlgfdlqsjmej47 then everyone can pay and get a relay. 😉